2
2000 Series
Specifications
The Specifications section gives some general specifications for the 2000 Series Temperature Regulator. The
nameplates give detailed information for a specific pilot as built in the factory.
On temperature increase, the vapor pressure of the
liquid in the bulb increases, forcing liquid into the
capillary and bellows and increases the pressure
exerted on the bellows. On temperature decrease,
the vapor pressure of the liquid in the bulb decreases
withdrawing liquid from the bellows which reduces the
pressure exerted on the bellows.
A balance is established between the force exerted
by the bellows and the counteracting range spring
force. On bellows pressure increase, the bellows
volume expands, the compression of the range
spring increases and the stem moves downward.
On bellows pressure decrease, the bellows volume
compresses, the range spring expands and the stem
moves upward.
For a direct acting valve, an increase in bulb
temperature closes the valve (heating). For a reverse
acting valve, an increase in bulb temperature opens
the valve (cooling).
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
SIZE,
NPS / DN
ORIFICE
MAXIMUM UPSTREAM PRESSURE, PSIG / BAR
MAXIMUM DIFFERENCE
BETWEEN INLET PRESSURE,
PSIG / BAR
Single Seat, Types 2010 and 2020
Double Seat, Types 2030 and 2040
Three-way, Type 2050
1/2 / 15
C
250 / 17.2
N/A
N/A
1/2 / 15
D
1/2 / 15
E
1/2 / 15
A
1/2 / 15
B
200 / 13.8
1/2 / 15
T
140 / 9.7
250 / 17.2
140 / 9.7
3/4 / 20
T
90 / 6.2
90 / 6.2
1 / 254
T
65 / 4.5
65 / 4.5
1-1/4 / 32
T
40 / 2.8
40 / 2.8
1-1/2 / 40
T
30 / 2.1
30 / 2.1
2 / 50
T
20 / 1.4
20 / 1.4
Table 1
. 2000 Series Flow and Pressure Ratings
Available Configurations
Type 2010:
Single seat, direct-acting
Type 2020:
Single seat, reverse-acting
Type 2030:
Double seat, direct-acting
Type 2040:
Double seat, reverse-acting
Type 2050:
Three-way mixing
Body Sizes
See Table 1
End Connection Style
NPT Union
Maximum Inlet Temperature
(1)
415°F / 213°C
Maximum Inlet Pressure
(1)
250 psig / 17.2 bar
Pressure Ratings
(1)
See Table 1
Bulb Ranges
(1)
See Table 5
Bulb Materials
Copper Bronze
Stainless steel
Fills
Iso-Butane
Ethylene-Glycol
N-Butane
Reclaimed R-123
N-Propyl-Alcohol
Toluene
